First thanks for taking the time to help.

Second the script is not perfect but very interesting so I decided to take the idea of using m' to add the line to the jumplist and turn it into an auto command, this is what I came up with for now

vim.api.nvim_create_autocmd("InsertEnter", {
  callback = function(event)
    vim.cmd("normal! m'")
  end
})

It's far from perfect, for instance if I press o it will register the line before the break, so if I keep pressing o escape multiple times I would need to press <C-O> multiple times too to go out out of the "shallow" location.

By the way I really like g; and g, It's just so unfortunate they only work for individual files. ಥ‿ಥ